The 20 Best Vitamin D Deficiency Doctors Near Me in Williamsport, PA

Find the Top Vitamin D Deficiency Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 34 doctor with experience in Vitamin D Deficiency near Williamsport, PA. Of these, 30 are Experienced and 4 are Advanced.

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34 providers found
    Advanced in Vitamin D Deficiency
    Endocrinology
    Advanced in Vitamin D Deficiency
    Endocrinology

    UPMC Endocrinology

    1100 Grampian Boulevard, 
    Williamsport, PA 
     (1.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Scott Segel, MD, specializes in endocrinology and is certified in endocrinology, diabetes and metabolism by the American Board of Internal Medicine. He practices at UPMC Susquehanna Health, Endocrinology in Williamsport. He completed his residency at Northwestern University Medical School and medical degree at Wayne State University School of Medicine. Dr. Segel is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 26 other conditions, according to our data. His clinical expertise encompasses Anaplastic Thyroid Cancer, Thyroid Cancer, Type 2 Diabetes (T2D), and Papillary Thyroid Cancer. Dr. Segel is board certified in American Board Of Internal Medicine. Dr. Segel is currently accepting new patients.

    Experienced in Vitamin D Deficiency
    Internal Medicine
    Experienced in Vitamin D Deficiency
    Internal Medicine

    UPMC Susquehanna Health, Hospitalist Service

    700 High Street, 
    Williamsport, PA 
     (0.8 miles away)
    Experience:
    44+ years
    Languages Spoken:
    English, Arabic

    Osman Osman is an Internal Medicine provider practicing medicine in Williamsport, Pennsylvania. He has been practicing medicine for over 44 years. Dr. Osman is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Dementia, Schizoaffective Disorder, Alzheimer's Disease, Hip Replacement, and Ureteroscopy.

    Experienced in Vitamin D Deficiency
    Experienced in Vitamin D Deficiency

    UPMC Endocrinology

    1100 Grampian Boulevard, 
    Williamsport, PA 
     (1.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Theresa Hershberger, CRNP, specializes in endocrinology and is a certified nurse practitioner by the American Academy of Nurse Practitioners. She practices at UPMC Susquehanna Health - Endocrinology in Williamsport. She received her associate's degree from Pennsylvania College of Technology, bachelor's degree from Chamberlain University, and master's degree from Bloomsburg University of Pennsylvania. Dr. Hershberger is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her clinical expertise encompasses Vitamin D Deficiency and Hypoparathyroidism. Dr. Hershberger is board certified in American Academy Of Nurse Practitioners. Dr. Hershberger is currently accepting new patients.

    Learn about our expert tiers
    Advanced in Vitamin D Deficiency
    Family Medicine
    Advanced in Vitamin D Deficiency
    Family Medicine

    Susquehanna Physician Services

    145 Shaffer St, 
    Williamsport, PA 
     (2.2 miles away)
    Languages Spoken:
    English

    Thomas Wallace is a primary care provider, practicing in Family Medicine in Williamsport, Pennsylvania. Dr. Wallace is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 26 other conditions, according to our data. His clinical expertise encompasses Unstable Angina, Lung Nodules, Familial Colorectal Cancer, and Colorectal Cancer.

    Experienced in Vitamin D Deficiency
    Experienced in Vitamin D Deficiency

    Susquehanna Health Family Medicine At Montoursville

    900 Plaza Drive, 
    Montoursville, PA 
     (4.5 miles away)
    Languages Spoken:
    English

    Donna Mullarkey, MD, specializes in geriatric medicine and is board-certified in family medicine by the American Board of Family Medicine. She is affiliated with UPMC Williamsport and UPMC Muncy. Dr. Mullarkey completed her residency at Northern Light Eastern Maine Medical Center and medical degree from Mayo Clinic College of Medicine and Science. Dr. Mullarkey is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 13 other conditions, according to our data. Her clinical expertise encompasses Chronic Kidney Disease, Breast Cancer, Hyperlipidemia Type 3, and Gitelman Syndrome. Dr. Mullarkey is board certified in American Board Of Family Medicine.

    Experienced in Vitamin D Deficiency
    Family Medicine
    Experienced in Vitamin D Deficiency
    Family Medicine

    Divine Providence Hospital Of The Sisters Of Christian Charity

    471 Hepburn St, 
    Williamsport, PA 
     (0.3 miles away)
    Languages Spoken:
    English

    William Bartlow is a primary care provider, practicing in Family Medicine in Williamsport, Pennsylvania. Dr. Bartlow is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Breast Cancer, Prothrombin Deficiency, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism.

    Experienced in Vitamin D Deficiency
    Nurse Practitioner
    Experienced in Vitamin D Deficiency
    Nurse Practitioner

    Susquehanna Health Hospitalist At WRMC

    700 High St, 
    Williamsport, PA 
     (0.8 miles away)
    Languages Spoken:
    English

    Lisa Schaffer is a Nurse Practitioner practicing medicine in Williamsport, Pennsylvania. Ms. Schaffer is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her clinical expertise encompasses Vitamin D Deficiency, Seasonal Affective Disorder (SAD), and Chronic Rhinosinusitis with Nasal Polyps (CRSwNP).

    Experienced in Vitamin D Deficiency
    Experienced in Vitamin D Deficiency

    UPMC Williamsport

    700 High St, 
    Williamsport, PA 
     (0.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Qasim Mahmood is a Pediatrics provider practicing medicine in Williamsport, Pennsylvania. Dr. Mahmood is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Obesity in Children, Developmental Dysphasia Familial, Umbilical Hernia, and Croup.

    Experienced in Vitamin D Deficiency
    Family Medicine
    Experienced in Vitamin D Deficiency
    Family Medicine

    James Baldys

    699 Hastings St, 
    Williamsport, PA 
     (1.0 miles away)
    Languages Spoken:
    English

    James Baldys is a primary care provider, practicing in Family Medicine in Williamsport, Pennsylvania. Dr. Baldys is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His clinical expertise encompasses Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Cyclic Vomiting Syndrome, and Shingles.

    Experienced in Vitamin D Deficiency
    Internal Medicine
    Experienced in Vitamin D Deficiency
    Internal Medicine

    Leader NSG Rehab Ct South Williamsport

    101 Leader Dr, 
    Williamsport, PA 
     (1.9 miles away)
    Languages Spoken:
    English

    Jere Eshleman is a primary care provider, practicing in Internal Medicine in Williamsport, Pennsylvania. Dr. Eshleman is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), Renal Papillary Necrosis, and Opioid Induced Constipation.

    Experienced in Vitamin D Deficiency
    Family Medicine
    Experienced in Vitamin D Deficiency
    Family Medicine

    UPMC Primary Care

    900 Plaza Drive, Suite A, 
    Montoursville, PA 
     (7.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Elizabeth Klucka, DO, specializes in family medicine and is certified in family medicine/OMT by the American Osteopathic Board of Family Physicians. She practices at UPMC Susquehanna Health, Family Medicine at Montoursville and is affiliated with UPMC Williamsport. She completed her residency at Williamsport Family Medicine Residency Center and medical degree at Philadelphia College of Osteopathic Medicine. Dr. Klucka is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Dementia, Low Potassium Level, Gitelman Syndrome, and Maturity Onset Diabetes of the Young. Dr. Klucka is board certified in American Board Of Family Medicine. Dr. Klucka is currently accepting new patients.

    Experienced in Vitamin D Deficiency
    Physician Assistant
    Experienced in Vitamin D Deficiency
    Physician Assistant

    UPMC Primary Care

    900 Plaza Drive, Suite A, 
    Montoursville, PA 
     (7.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Brittany Todd, PA-C, specializes in family medicine and is a certified physician assistant by the National Commission on Certification of Physician Assistants. She practices at UPMC Susquehanna Health, Family Medicine at Montoursville. She received her bachelor's degree from Pennsylvania State University and master's degree from Lock Haven University. Ms. Todd is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her clinical expertise encompasses Vitamin D Deficiency. Ms. Todd is board certified in National Commission On Certification Of Physician Assistants. Ms. Todd is currently accepting new patients.

    Advanced in Vitamin D Deficiency
    Advanced in Vitamin D Deficiency

    Susquehanna Health Cardiology

    740 High Street, Suite 2001, 
    Williamsport, PA 
     (10.4 miles away)
    Languages Spoken:
    English, Spanish

    Adam S. Splaver, MD, specializes in cardiology and is board-certfied in cardiovascular disease and internal medicine by the American Board of Internal medicine. He is affiliated with UPMC Williamsport. Dr. Splaver completed his fellowship and residency at Mount Sinai Medical Center and medical degree at Albert Einstein College of Medicine. Dr. Splaver is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Heart Murmurs, Orthostatic Hypotension, Peripheral Artery Disease, and Arterial Insufficiency. Dr. Splaver is board certified in American Board Of Internal Medicine and American Board Of Internal Medicine.

    Experienced in Vitamin D Deficiency
    Family Medicine
    Experienced in Vitamin D Deficiency
    Family Medicine

    Office

    1500 Broad St, 
    Montoursville, PA 
     (5.3 miles away)
    Languages Spoken:
    English

    Robert Muller is a primary care provider, practicing in Family Medicine in Montoursville, Pennsylvania. Dr. Muller is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Breast Cancer, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.

    Experienced in Vitamin D Deficiency
    Internal Medicine
    Experienced in Vitamin D Deficiency
    Internal Medicine

    Office

    900 Plaza Dr Ste A, 
    Montoursville, PA 
     (7.6 miles away)
    Languages Spoken:
    English

    Ingrid Ockenhouse is a primary care provider, practicing in Internal Medicine in Montoursville, Pennsylvania. Dr. Ockenhouse is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her clinical expertise encompasses Juvenile Primary Osteoporosis, Chronic Obstructive Pulmonary Disease (COPD), Type 2 Diabetes (T2D), and Maturity Onset Diabetes of the Young.

    Experienced in Vitamin D Deficiency
    Family Medicine
    Experienced in Vitamin D Deficiency
    Family Medicine

    Evangelical Medical Services Organization

    45 Park Dr, 
    Montgomery, PA 
     (8.9 miles away)
    Languages Spoken:
    English

    Steven Barrows is a primary care provider, practicing in Family Medicine in Montgomery, Pennsylvania. Dr. Barrows is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His clinical expertise encompasses Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, Hypertension, and Hypothyroidism.

    Experienced in Vitamin D Deficiency
    Family Medicine
    Experienced in Vitamin D Deficiency
    Family Medicine

    Office

    151 John Brady Dr, 
    Muncy, PA 
     (9.6 miles away)
    Languages Spoken:
    English

    Steven Yordy is a Family Medicine provider practicing medicine in Muncy, Pennsylvania. Dr. Yordy is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Conjunctivitis with Pseudomembrane, Heart Failure with Preserved Ejection Fraction (HFpEF), Vitamin D Deficiency, and Small Lymphocytic Lymphoma (SLL).

    Experienced in Vitamin D Deficiency
    Cardiology
    Experienced in Vitamin D Deficiency
    Cardiology

    Susquehanna Health Cardiology

    740 High Street, Suite 2001, 
    Williamsport, PA 
     (10.4 miles away)
    Languages Spoken:
    English, Hindi, Russian

    Sameer Kaul, MD, specializes in cardiology and is board-certified by the American Board of Internal Medicine. He is affiliated with UPMC Williamsport. Dr. Kaul received his medical degree from Vitebsk State Medical University and completed residencies at Dharamshila Cancer Research Centre & Metro Heart Hospital and The Brooklyn Hospital Center, in addition to fellowships at Jackson Memorial Hospital - University of Miami Leonard M. Miller School of Medicine and Weill Cornell Medical College. Dr. Kaul is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Apoplexy, Congenital Mitral Malformation, Familial Neurocardiogenic Syncope, and Metabolic Syndrome. Dr. Kaul is board certified in American Board Of Internal Medicine and American Board Of Internal Medicine.

    Experienced in Vitamin D Deficiency
    Family Medicine
    Experienced in Vitamin D Deficiency
    Family Medicine

    UPMC Primary Care

    700 High Street, Floor 9, 
    Williamsport, PA 
     (10.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    John Pellegrino, DO, is certified in family medicine by the American Board of Family Medicine. He practices at UPMC Primary Care Williamsport and is affiliated with UPMC Williamsport, and UPMC Lock Haven. He completed his residency at Williamsport Family Medicine Residency Center and medical degree at Philadelphia College of Osteopathic Medicine. Dr. Pellegrino is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Arrhythmogenic Right Ventricular Cardiomyopathy, Cardiomyopathy, Urinary Tract Infection in Children, and Familial Combined Hyperlipidemia. Dr. Pellegrino is currently accepting new patients.

    Experienced in Vitamin D Deficiency
    Palliative Medicine
    Experienced in Vitamin D Deficiency
    Palliative Medicine

    UPMC Palliative Medicine

    1100 Grampian Boulevard, Floor 3, 
    Williamsport, PA 
     (10.4 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English
    Offers Telehealth

    Kimberly Pish, DO, specializes in hospice and palliative care and is board-certified in family medicine/OMT by the American Osteopathic Board of Family Physicians. She is affiliated with UPMC Muncy and UPMC Williamsport. Dr. Pish completed her fellowship at Geisinger Medical Center, residency at Williamsport Family Medicine Residency Center and medical degree at Philadelphia College of Osteopathic Medicine. Dr. Pish is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Hyperlipidemia Type 3, High Cholesterol, Cirrhosis, and Familial Combined Hyperlipidemia. Dr. Pish is board certified in American Osteopathic Board Of Family Physicians.

    Showing 1-20 of 34

    Last Updated: 04/28/2026

    What is the definition of Vitamin D Deficiency?

    Vitamin D deficiency is when the body does not have enough vitamin D. Vitamin D is necessary for absorbing calcium and healthy bones.

    When should I see a Vitamin D Deficiency doctor near Williamsport, PA?

    There are various reasons why you may want to see a specialist, such as: 

    • Your primary care provider recommends it. 
    • Your condition requires expert knowledge and specialized care. 
    • Your symptoms persist or worsen despite treatment. 
    • You need specialized testing or procedures. 
    • You want a second opinion.  

    What should I consider when choosing a Vitamin D Deficiency doctor near Williamsport, PA?

    It’s important to see a provider with expertise in your specific condition. Each provider profile in MediFind’s doctor database includes information on which conditions they treat, years of experience, research contributions, languages spoken, insurance plans accepted, and more.  

    How does MediFind rank Vitamin D Deficiency doctors near Williamsport, PA?

    MediFind’s rankings are based on a variety of data sources, such as the number of articles a doctor has published in medical journals, participation in clinical trials and industry conferences, as well as the number of patients that provider sees for a given condition. Note that MediFind’s provider database is not based on user reviews, and providers do not pay to be included in the database. 

    What types of insurance are accepted by Vitamin D Deficiency doctors near Williamsport, PA?

    Most profiles in MediFind’s doctor database include a list of insurance plans accepted by that provider. However, it’s a good idea to contact the provider’s office to make sure they still accept your insurance, then doublecheck by contacting your insurance plan to confirm they’re in network. 

    How can I book an appointment online with a Vitamin D Deficiency doctor near Williamsport, PA?

    MediFind offers direct scheduling for certain providers using the “Request Appointment” button on that provider’s profile. If the schedule option is not available for a provider, tap the red “Show Phone Number” button on their profile to get their contact information. If you prefer to find providers who offer online scheduling, select “Schedules online” under the “Availability” category of the filter feature on the left side of the Vitamin D Deficiency doctor search results page. 

    Why is it important to get a second opinion from a different Vitamin D Deficiency doctor?

    Second opinions are an opportunity to confirm a diagnosis and its root cause, learn about alternative treatment options, or simply gain peace of mind. Many people, especially those with serious diagnoses, get second opinions so they can understand all their options and make informed decisions, so don’t hesitate to get one if you have any doubts or need more information or clarification regarding your care. Note that some insurance plans require second opinions, while others don’t cover second opinions, so be sure to confirm with your insurance provider first.   

    How can I prepare for my appointment with a Vitamin D Deficiency doctor near Williamsport, PA?

    Prepare for your appointment by gathering the following items: 

    • Copies of medical records (dating back at least one year) 
    • Your medical history, including illnesses, medical conditions, surgeries, and other doctors you see 
    • Family history of disease 
    • List of current prescription drugs, over-the-counter medicines, vitamins, and herbal remedies or supplements including names and doses 
    • Allergies to medications, food, latex, insects, etc.  
    • List of questions and concerns 
    • Your insurance card 

    You might also contact the provider’s office to see if they offer transportation or childcare services or if you’re allowed to bring a loved one for support or to take notes during your visit. 

    What questions should I ask my Vitamin D Deficiency doctor?

    Here are some sample questions: 

    • Can you explain in simple terms what this condition is and how it’s treated? 
    • What symptoms or side effects should I watch for? 
    • What tests will be involved, and when can I expect results? 
    • Are there other specialists I need to see? 
    • What’s the best way to reach you if I have follow-up questions? 

    How can I learn about the latest clinical trials and research advances my Vitamin D Deficiency doctor may know about?

    MediFind’s Clinical Trials tool asks you a series of questions to help you narrow down your search by health condition, age, gender, location, how far you’re willing to travel, and more. Each question you answer filters down the number of trials until you find the ones that are most relevant to you. 

    MediFind’s Latest Advances tool features summaries of recent articles published in medical journals. We use cutting-edge technology to scour medical publication databases for the latest research advancements on any given condition, then we simplify this information in a way that’s useful and easy to understand. 

    Can I filter my search to show male or female Vitamin D Deficiency doctors near Williamsport, PA?

    Look for the filter feature on the left side of the Vitamin D Deficiency doctor search results page. Select “Female” or “Male” under the “Gender” category to search for female or male providers exclusively. If the “Any” option is selected, it will pull results for both male and female providers. 

    Can I filter my search to find a Vitamin D Deficiency doctor that offers video calls?

    Look for the filter feature on the left-side of the Vitamin D Deficiency doctor search results page. Select “Offers telehealth visits” under the Availability category to search for providers who offer virtual appointments (video calls). 

    Reviewed on: 11/11/24  

    By: MediFind Medical Staff 

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